data/mathematical/203.mml
<math xmlns='http://www.w3.org/1998/Math/MathML' display='inline'><semantics><mrow><mo stretchy="false">(</mo><mn>1</mn><mo>+</mo><mn>2</mn><mo>+</mo><mi>…</mi><mo>+</mo><mi>k</mi><mo>+</mo><mi>…</mi><mo>+</mo><mo stretchy="false">(</mo><mi>n</mi><mo>−</mo><mn>1</mn><mo stretchy="false">)</mo><mo stretchy="false">)</mo></mrow><annotation encoding='application/x-tex'>(1+2+\ldots+k+\ldots+(n-1))</annotation></semantics></math>